Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host mail-relay1.dti.net.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

                        The Postfix program

<address@hidden>: host
    mail.confidentialconnections.com[206.252.133.61] said: 550 5.1.1
    <address@hidden>... User unknown

Reporting-MTA: dns; mail-relay1.dti.net
Arrival-Date: Sun,  6 Jul 2003 05:11:54 -0400 (EDT)

Final-Recipient: rfc822; design2@confidentialconnections.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host
    mail.confidentialconnections.com[206.252.133.61] said: 550 5.1.1
    <design2@confidentialconnections.com>... User unknown

--- Begin Message --- Subject: Re: Application Date: Sun, 6 Jul 2003 10:56:27 +0200

Please see the attached zip file for details.

"your_details.zip
Description: Zip compressed data

--- End Message ---